Question

вычеслите (⅔√0,09+0,78√100)-(4√5)²​

Answer 1

Решение:

$\Big (\dfrac{2}{3} \cdot \sqrt{0.09} + 0.78\cdot \sqrt{100} \Big )-(4\sqrt{5} )^2 =\\\\= \Big (\dfrac{2}{3} \cdot 0.3 + 0.78\cdot 10 \Big )-16\cdot 5 =\\\\ =(0.2 + 7.8) - 80 \ =\\\\=8 - 80 = -72$